Rotary valve for reciprocating engines



Aug 11, 1931. P. NOURRY ET AL ROTARY VALVE FORRECIPROCATING ENGINES 2 Sheets-Sheet Filed Nov. 30, 1928 Aug. H 133. P. NOURRY ET AL 1,318,921

ROTARY VALVE FOR RECIPROCA'IIIW:- ENGINES Filed Nov. so, 1928 2 Sheets-Sheet 2 Patented Aug. 11, 1931 m'rso STATES PATENT orrlca EA HOURBY AND GLUKSHANN-BODAHSKI, O1" LYON, FRANCE ROTARY VALVE FOB REGIPBOGATING ENGINES Application fled November 80, 1828, Serial No. 822,882, and in Belgium December 5, 1927.

The present invention relates to rotary valves for reciprocating engines and, more especially, forinternal combustion engines.

One of the objects of the invention is to '5 provide an assembly of rotary valve and cylinder in which both the intake and exhaust o rations may occur through a single orifice mined in the latter.

Another object is to better balance the w pressures exerted by the circulating fluids on opposite sides of the rotary valve.

Further objects will appear in the course of the detailed description now to be van with reference to the accompanying raw- 3% in ,,in which:'

1g. 1 is an elevation partially in section (on line 1-1 of Fig. 2;, of one illustrative embodiment of the invention;

Fig. 2 is a section taken on line 2-2 of 3 is a section similar to Fig. 2 of a second form oi the invention;

Figs. 4 "and 5 show the frictional surfaces of the valve and of the valve seat represented in Fig. 3.

Re erring to Figs. land 2 of the drawings, there is shown, a cylinder block contaming an even-number of cylinders a,a -plurality of'pistons b,-bearing blocks c, 39 shafts mounted on blocks 0 pair of ports a communicating with one slde of each piston b,valve casings a, cleaning passages 0, 0 and pairs of assa es 0, 0 formed therein communicating with the intake and discharge manifolds respectively,rotatable valves e keyed to shafts d having intake passages e and discharge passages e formed therein adapted to establish communication successively between a and 0 andbetween a and e,--valve seats-e having openings 13 formed therethrough and fitting over shoulders of blocker and opening i fitting over collars e keyed to shafts d,-rin s a sealing joints o i,--crowns e threade ly engagingl with valves e and slidably engaging wit the periphery of seats 0 a-nd an endless screw g meshing with helicoidal teeth e formed on the periphery of valves e. m The manner in which the foregoing assem-v In the form of construction illustrated in Figs. 3 to 5, the general assembly remains the same, but difi'erent means are employed for preventing leakage at joints. Here valve seat e and port a"traverse an annular element 2' prov1ded' with piston rings Z, spaces being provided at n, n and 11. between z and the walls with which it coacts. One of the piston rings 1 is formed with a conical surace tending to take the thrust of element 5 against valve e. Grooves m are formed on the frictional surface of elements a to iiisure against leakage and elements a and e are prevented from rotatin by pins l0 and convenient forms of stops Enot shown), re spectively.

A lubricating system, applicable as well to the structure represented in Figs. 1 and 2, is shown in connection with this form of device consisting of central grooves p formed in valve 6 communicating with an oil source gnot shown) and dischargin via grooves o ormed in seat a and perip' eral grooves p and pf formed in e to the valve casing and to an oil discharge conduit (not shown). It will be noted that the feed and discharge of oil occurs only when are in lme with grooves o and that y properly positioning these three elements, circulation of oil between R and 11* may be interrupted during the passage of grooves 0 past openings e and e".

The various' forms of assembly hereinabove described present the following advantages, (1) springs and equivalent structures for maintaining contact between the valve and its seat are eliminated; (2) a bet-y ter balance is assured between the pressures exerted by the circulating fluids on the surfaces facing the valves (Figs. 1 to 5); and

(3) gas tightness is assured by eliminating flexional effects on the, valves and by reducing the effects due to expansion.

and p What we claim is 1. A machine of he wall t ereof, a loosely mounted vva ve seat having an opening therethrough positioned in line with said first-named opening, a tube traversing both of aforesaid openings, means for sealing the foint between said tube and the walls of sai openings, a rotatable valve havin a plane surface 1n frictional contact with t e valve seat, said valve havin independent feed and discharge passages ormed therethrough positioned to communicate successively with said tube during rotation of p the valve, and dischar ,in with said passages 53 va ve.

2. A machine as defined in claim 1 in combination. with means for lubricating thesurports communicatring rotation of the face of contact between the val and the valve seat, said means includin a, groove formed in the plane surface 0 the valve contacting with the valve seat andan elongated groove formed in the valve seat and positioned to overlap and communicating of the valve. a

In testimony whereof we have-signed this ification. r

AUL NOURRY.

withsaid last named groove duringl '.rotation DANIEL GLUKSMANN-BQDLNSKI.

lass described comprisin a cylinder having an openin in the 

